Window-sash



(No Model.)

G. L. HAHN. .WINDOW SASH.

Patented Apr. 13, 1

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NTED STATES GEORGE L. HAHN, OF PITTSBURG, PENNSYLVANIA.

WlNDOW SASH.

SPECIFICATION forming part of Letters Patent No. 580,394, dated April 13, 1897.

Application filed October 30, 1896, Serial No. 610,615. (No model.)

To all, 1.0700772, it may concern:

Be it known that I, GEORGE L. HAHN, a citizen of the United States,residin g at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Window-Sash, of which the following is a specification.

The invention relates to improvements in window-sashes.

The object of the present invention is to improve the construction of that class of window-sashes which are pivotally mounted and which are adapted to be reversed to clean their inner and outer faces without removing them from the window-frame, and to provide means for automatically loosening a sash to permit it to be rotated freely to reverse it, and for tightening the sash when it is returned to its normal position to prevent any drafts at the points of connection between it and the strips or slides to which it is pivoted.

The invention consists in the construction and novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the claim hereto appended.

In the drawings, Figure 1 is a perspective view of a window provided with sashes constructed in accordance with this invention. Fig. 2 is a horizontal sectional View illustrating the manner of pivoting a sash. Fig. 3 is an enlarged sectional view illustrating the manner of mounting the pivots of the sashes. Fig. 4 is a detail perspective view of a pivot and its threaded socket, the parts being separate. Fig. 5 is a transverse sectional view of one of the sashes and its sliding strips.

Like numerals of reference designate corre sponding parts in all the figures of the drawlugs.

1 and 2 designate upper and lower sashes adapted to slide similarly to the ordinary win- (low-sashes and counterbalanced by weights which are connected with the sashes by cords passing over pulleys at the top of a Windowframe 3.

Each sash is provided at the center of its sides with horizontally-disposed pivots aand 5, provided, respectively, with right and left hand threads and j ournaled 011 sliding strips 6, which are arranged in the adjacent ways of the window-frame and which have the sashcords connected with them. The horizontal pivots are formed integral with plates 7 and 8 and are arranged in horizontal perforations of the sliding strips 6, which are provided at their inner faces with plates 9, having smooth perforations to receive the pivots, and at their outer faces with plates 10 and 11. The plates 10 and 11 are provided with sockets or perforations having right and left hand threads to conform to the threads of their respective pivots, and all of the said plates are provided with perforations to receive screws for attaching them to the sash and to the sliding strips.

When the sash is partially rotated to reverse it and to return it to its normal position, the sliding strips 6 are moved outward and inward to free the sash when it is reversed and to clamp the same when it is returned to its normal position to prevent any drafts at the side edges of the sash. The pivots being fixed to the sash produce the inward and outward movement of the sliding strips through their threads and the threads of the socketplates 10 and 11.

The inner faces of the sliding strips 6 are provided at their upper and lower portions with oppositely-disposed recesses 12, and the side edges of the sash are provided with up per and lower enlargements 14, which fit in the recesses when the sash is in a vertical position. The recesses and the enlargements of the guide-strips and the sash form stops and also operate to prevent any drafts. They extend from the ends of the sliding strips toward the centers thereof, but terminate short of the same, and their inner end walls are arranged at an inclination. The inner ends of the enlargements 14 are cut at an angle to conform to the configuration of the recesses, and when the sash is closed or swung upward to its vertical position the beveled or inclined edges of the enlargements and the guidestrips cause the parts to be forced tightly together.

Each sash is locked against accidental rotation by pivoted buttons 15, located at the bottom of the sash and at opposite sides thereof. Each pivoted button is arranged in a circular casing composed of segmental sections 16 and 17, seated in recesses of the sash and the sliding strips.

The lower sash is designed to be provided at its bottom With a suitable lift and at its top with a suitable sash-fastener to lock the sashes in their closed position.

It will be seen that the sashes are simple and comparatively inexpensive in construction, that the sliding strips are held tightly against the sashes When the latter are in their normal position in order to prevent any drafts, and that in rotating a sash the strips outer plates secured to the inner and outer faces of the strips, the inner plates having smooth perforations and the outer ones being provided with right and left hand threaded sockets, a reversible Window-sash, and the right and left hand threaded pivots passing through the perforations of the inner plates, engaging the right and left hand threads of the sockets of the outer plates and provided with attachment-plates secured to the side edges of the sash, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affiXed my signature in the presence of two witnesses.

GEORGE L. HAHN.

Witnesses:

H. L. REINECKE, LoUIs A. GLAsER. 

